tools/testing/selftests/ftrace/test.d/instances/instance.tc

   1 #!/bin/sh
   2 # description: Test creation and deletion of trace instances
   3
   4 if [ ! -d instances ] ; then
   5     echo "no instance directory with this kernel"
   6     exit_unsupported;
   7 fi
   8
   9 fail() { # mesg
  10     rmdir x y z 2>/dev/null
  11     echo $1
  12     set -e
  13     exit $FAIL
  14 }
  15
  16 cd instances
  17
  18 # we don't want to fail on error
  19 set +e
  20
  21 mkdir x
  22 rmdir x
  23 result=$?
  24
  25 if [ $result -ne 0 ]; then
  26     echo "instance rmdir not supported"
  27     exit_unsupported
  28 fi
  29
  30 instance_slam() {
  31     while :; do
  32         mkdir x
  33         mkdir y
  34         mkdir z
  35         rmdir x
  36         rmdir y
  37         rmdir z
  38     done 2>/dev/null
  39 }
  40
  41 instance_slam &
  42 p1=$!
  43 echo $p1
  44
  45 instance_slam &
  46 p2=$!
  47 echo $p2
  48
  49 instance_slam &
  50 p3=$!
  51 echo $p3
  52
  53 instance_slam &
  54 p4=$!
  55 echo $p4
  56
  57 instance_slam &
  58 p5=$!
  59 echo $p5
  60
  61 ls -lR >/dev/null
  62 sleep 1
  63
  64 kill -1 $p1
  65 kill -1 $p2
  66 kill -1 $p3
  67 kill -1 $p4
  68 kill -1 $p5
  69
  70 echo "Wait for processes to finish"
  71 wait $p1 $p2 $p3 $p4 $p5
  72 echo "all processes finished, wait for cleanup"
  73
  74 mkdir x y z
  75 ls x y z
  76 rmdir x y z
  77 for d in x y z; do
  78         if [ -d $d ]; then
  79                 fail "instance $d still exists"
  80         fi
  81 done
  82
  83 set -e
  84
  85 exit 0